Columbia County's estimated 2026 population is 54,217 with a growth rate of 0.23% in the past year according to the most recent United States census data. Columbia County is the 17th largest county in Oregon. The 2010 population was 49,353 and has seen a growth of 9.86% since that time.
Data after 2023 is projected based on recent change
Overall: 43.3 years
Female: 44.3 years
Male: 42.6 years
There are 42,626 adults, (10,754 of whom are seniors) in Columbia County.
Female: 26,201 (49%)
Male: 27,292 (51%)
The racial composition of Columbia County includes 85.45% White, and smaller percentages for other race, Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 45,709 | 85.45% |
| Two or more races | 5,818 | 10.88% |
| Other race | 503 | 0.94% |
| Native American | 481 | 0.9% |
| Asian | 423 | 0.79% |
| Black or African American | 332 | 0.62% |
| Native Hawaiian or Pacific Islander | 227 | 0.42% |
Columbia County's average per capita income is $52,628. Household income levels show a median of $87,458. The poverty rate stands at 8.87%.
Name | Median | Mean |
|---|---|---|
| Married Families | $110,594 | - |
| Families | $99,592 | $112,963 |
| Households | $87,458 | $100,740 |
| Non Families | $51,027 | $65,253 |
Average Income
Median Household Income
Poverty Rate